/Lib/lib2to3/fixes/fix_zip.py
http://unladen-swallow.googlecode.com/ · Python · 34 lines · 32 code · 0 blank · 2 comment · 0 complexity · 8e61d2105f3122181e793e7c9b4caf31 MD5 · raw file
- """
- Fixer that changes zip(seq0, seq1, ...) into list(zip(seq0, seq1, ...)
- unless there exists a 'from future_builtins import zip' statement in the
- top-level namespace.
- We avoid the transformation if the zip() call is directly contained in
- iter(<>), list(<>), tuple(<>), sorted(<>), ...join(<>), or for V in <>:.
- """
- # Local imports
- from .. import fixer_base
- from ..fixer_util import Name, Call, in_special_context
- class FixZip(fixer_base.ConditionalFix):
- PATTERN = """
- power< 'zip' args=trailer< '(' [any] ')' >
- >
- """
- skip_on = "future_builtins.zip"
- def transform(self, node, results):
- if self.should_skip(node):
- return
- if in_special_context(node):
- return None
- new = node.clone()
- new.set_prefix("")
- new = Call(Name("list"), [new])
- new.set_prefix(node.get_prefix())
- return new